Cleaner gobies evolve advertising stripes of higher contrast
Cleaner gobies evolve advertising stripes of higher contrast
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更干净的虾虎鱼进化出对比度更高的广告条纹
DOI：
10.1242/jeb.025478
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发表时间：
2009
影响因子：
2.8
通讯作者：
J. T. Streelman
中科院分区：
文献类型：
--
作者：
L. Lettieri;K. L. Cheney;C. Mazel;D. Boothe;N. Marshall;J. T. Streelman
加勒比海的Elacatinus虾虎鱼沿着生态轴线经历了快速的物种形成，该属的特定物种充当“清洁工”，从被称为“客户”的较大珊瑚礁鱼类身上清除体外寄生虫。在栖息地的使用，行为和横向身体条纹颜色的进化转变区分清洁从祖先海绵居住血统。与珊瑚礁清洁行为相关的高对比度条纹颜色可能已经进化为清洁状态的信号。我们问是否清洁虾虎鱼与蓝色条纹是更显眼的比祖先的黄色和绿色条纹表型的一组不同的潜在客户端的视觉系统在热带珊瑚礁环境中，清洁站通常观察。使用分光光度测量的清洁剂与蓝色和黄色的条纹和他们的F1杂交，我们测试了每个颜色条纹的对比度，潜在的双色和三色珊瑚礁鱼的视觉系统，对典型的珊瑚和海绵微生境的背景颜色。蓝色条纹提供了最高的平均色彩对比度在一系列可能的微生境颜色的大多数鱼的视觉系统测试。黄色和混合绿色条纹提供的对比度在不同的栖息地与二色视觉系统相当。对于许多潜在的三色视觉系统来说，绿色条纹的对比度低于蓝色和黄色。我们认为，在Elacatinus虾虎鱼的蓝色条纹的演变可能是高的颜色对比度的信号，由不同的珊瑚鱼客户端的感官偏见和视觉系统驱动的自然选择的结果。
SUMMARY Elacatinus gobies of the Caribbean have undergone rapid speciation along ecological axes, and particular species from this genus act as `cleaners' that remove ectoparasites from larger coral reef fish, termed `clients'. Evolutionary shifts in habitat use, behavior and lateral body stripe colors differentiate cleaners from ancestral sponge-dwelling lineages. High-contrast stripe colors associated with cleaning behavior on coral reefs may have evolved as a signal of cleaning status. We asked whether cleaner gobies with blue stripes are more conspicuous than ancestral yellow- and green-stripe phenotypes to a diverse set of potential client visual systems in the tropical reef environment where cleaning stations are commonly observed. Using spectrophotometric measurements of cleaners with blue and yellow stripes and their F1 hybrid, we tested the contrast of each color stripe to both potential dichromatic and trichromatic reef fish visual systems, against typical coral and sponge microhabitat background colors. Blue stripes provide the highest average chromatic contrast across a range of possible microhabitat colors to the majority of fish visual systems tested. The contrast provided by yellow and hybrid green stripes are comparable across habitats to dichromatic visual systems. The green stripe is less contrasting than both blue and yellow to many potential trichromatic visual systems. We suggest that the evolution of blue stripes in Elacatinus gobies could be a result of natural selection for signals of high color contrast, driven by the sensory biases and visual systems of diverse reef fish clients.